CVE-2021-26539 — Improper Input Validation in Sanitize-html

CWE-20 — Improper Input Validation6 documents6 sources
Severity
5.3MEDIUMNVD
EPSS
0.3%
top 47.67%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
1
Apostrophecms Sanitize-html
Timeline
PublishedFeb 8
Latest updateMay 6

Description

Apostrophe Technologies sanitize-html before 2.3.1 does not properly handle internationalized domain name (IDN) which could allow an attacker to bypass hostname whitelist validation set by the "allowedIframeHostnames" option.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:NExploitability: 3.9 | Impact: 1.4

Affected Packages2 packages

Patches

Patch: github.com ↗Patch: github.com ↗

🔴Vulnerability Details

3
GHSA
Improper Input Validation in sanitize-html↗2021-05-06
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OSV
Improper Input Validation in sanitize-html↗2021-05-06
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CVEList
CVE-2021-26539: Apostrophe Technologies sanitize-html before 2↗2021-02-08
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📋Vendor Advisories

2
Red Hat
sanitize-html: improper handling of internationalized domain name (IDN) can lead to bypass hostname whitelist validation↗2021-01-22
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Debian
CVE-2021-26539: node-sanitize-html - Apostrophe Technologies sanitize-html before 2.3.1 does not properly handle inte...↗2021
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CVE-2021-26539 — Improper Input Validation | cvebase